Mifflin County Population

1790–2026

46,231

2026 projection

0.2% since 2020 (increase)

010K20K30K40K50K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Mifflin County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202646,231+1040.23%
202546,127+1040.23%
202446,023+470.10%
202345,976-170.04%
202245,993-1950.42%
202146,188+440.10%
202046,144+540.12%
201946,090-910.20%
201846,181-890.19%
201746,270-190.04%

Showing 10 of 38 years.

Mifflin County Demographics

43.4median age

Median age

Female44 yrs
Male42.9 yrs

Adults

35,613
10,130 seniors (65+) · 28% of adults25,483 other adults

Sex

Female 50.9% · 23,436Male 49.1% · 22,605

Population by age

MaleFemale85+ years, male: 45785+ years, female: 80980–84 years, male: 48980–84 years, female: 60475–79 years, male: 97175–79 years, female: 1,18370–74 years, male: 1,24570–74 years, female: 1,44765–69 years, male: 1,43565–69 years, female: 1,49060–64 years, male: 1,69860–64 years, female: 1,53455–59 years, male: 1,50455–59 years, female: 1,71250–54 years, male: 1,61450–54 years, female: 1,58045–49 years, male: 1,30445–49 years, female: 1,19740–44 years, male: 1,36640–44 years, female: 1,19835–39 years, male: 1,04835–39 years, female: 1,30630–34 years, male: 1,37830–34 years, female: 1,27325–29 years, male: 1,28425–29 years, female: 1,28820–24 years, male: 1,18820–24 years, female: 1,12515–19 years, male: 1,33215–19 years, female: 1,34810–14 years, male: 1,63610–14 years, female: 1,4075–9 years, male: 1,2065–9 years, female: 1,5260–4 years, male: 1,4500–4 years, female: 1,40985+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 460 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Mifflin County Income

$63,953median household income

Median household income

$63,953

Half of households earn more, half earn less

Median earnings

$43,905

Typical yearly pay for a worker 25 or older.

Poverty rate

16.2%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Mifflin County Marital Status

52% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married52%53%52%
Never married27%31%24%
Divorced12%11%12%
Widowed8%4%12%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year